Research on Several Issues in Construction of Deeply Bored Pile of Bridge;

Open hole testing, completion test and system testing are applied in Chang shen1 well.

High-Temperature Drilling Fluids in Changshen-5 Well;

Design of the Binary Optical Element of Long Focal Depth and Small Spot;

Study of Long Focal Depth Optical Elements Applied in the Diagnosis for Inertial Confinement Fusion Plasmas;

The plates are used as the elements with long focal depth,whose two important parameters*#:the axial intensity distribution and the axial variation of the focused-central-spot size,are simulated and analyzed*#.

In this paper,compressible flow over cavities with a series of length-to-depth ratios(L/D)is first computationally investigated,the change of the aerodynamic environment in the cavity is obtained through the change of the length-to-depth ratio.

Calculating method of settlement of single piles based on energy conservation law was specified firstly which was used as a tool to analyze the effects of length,diameter,elastic modulus of piles and shaft resistance of surrounding soils on distribution characteristics of axial force and shaft settlement of long piles.

Along with the rapid development of city and transportation construction in recent years,long piles have been widely used under the condition that the load of superstructure is be-coming heavier and the permissible settlement is smaller.